docs: def add_mongo_config(app, simple_connection_string,
                       mongo_uri, collection_name):
      """
      Configure the application to use MongoDB.
  
      :param app: Flask application
      :param simple_connection_string:
                  Expects host:port:database_name or database_name
                  Mutally_exclusive with mongo_uri
      :param mongo_uri: Expects mongodb://... as defined
                  in https://docs.mongodb.com/manual/reference/connection-string/
                  Mutually exclusive with simple_connection_string (must be None)
      :param collection_name: The collection containing Sacred's runs
      :return:
      """
      if mongo_uri != (None, None):
          add_mongo_config_with_uri(app, mongo_uri[0], mongo_uri[1],
                                    collection_name)
          if simple_connection_string is not None:
              print("Ignoring the -m option. Overridden by "
                    "a more specific option (-mu).", file=sys.stderr)
      else:
          # Use the default value 'sacred' when not specified
          if simple_connection_string is None:
              simple_connection_string = "sacred"
          add_mongo_config_simple(app, simple_connection_string, collection_name)